Who ever has the cheapest price. I used to only go to Chevron but it really does not matter. I noticed no difference when I started going to off brand gas stations. The additives are a joke and gas is regulated pretty well these days.

Who ever has the cheapest price. I used to only go to Chevron but it really does not matter. I noticed no difference when I started going to off brand gas stations. The additives are a joke and gas is regulated pretty well these days.

The additives are not a joke. Find an insider at Chevron, Shell, Bp, Texaco, whatever and they'll explain it to you. All it took was one short Vietnamese gentleman with a Ph.D in chemistry from Chevron to convince me.

At the time, about '05 or so, only Chevron had additives in all three grades and Shell had it in premium. Now, mostly through botched mergers, others have caught up.

To answer the question in short, Chevron whenever possible, Shell second, any major brand after that, never the off brands. Always, always, premium.

I try to use a station that has a larger than normal clientel of higher end cars that require premiun...At least I know the premium grade will be "fresher" and possibly already in the hose before I use it...lol...

I have oil refinery chains and Marathon and Exxon to choose from. I generally like Exxon better since I have noticed the other day my SS pinging from the refinery chain so I filled back up with 93 from the Exxon just as it was 93 from the refinery chain and it has since quit pinging. Going out before I go today and pull my fuse to reset the map.

I thought there was something in the manual about recommended fuels/additives, where Mobil was one of them. Might just be marketing. Started with Sunoco, only because they're close. Went back to Mobil now that they've dropped the extra fees for using a card at the pump... that really annoyed me, greedy bastards! Nothing but 93 since I got the car.

Sunoco only for me. I get the best mpg with it. There are no shell or Exxon stations near me. Places like delta sonic are the worst places to get fuel. They water it down so much it's not worth the savings or risk.

I used to run BP Ultimate exclusively. However, since my tune, the engine has better cold/low speed operation running Phillips 66 93 octane fuel, Even though I'm tuned for 91 octane. Runs great on the Phillips.

I thought there was something in the manual about recommended fuels/additives, where Mobil was one of them. Might just be marketing. Started with Sunoco, only because they're close. Went back to Mobil now that they've dropped the extra fees for using a card at the pump... that really annoyed me, greedy bastards! Nothing but 93 since I got the car.

Greedy bastards? Do you have any idea how much merchants have to pay for accepting cards? Some Shell station charge .50 for using a card while Arco charges .35 cents. If it bugs you pay with cash that simple.

Greedy bastards? Do you have any idea how much merchants have to pay for accepting cards? Some Shell station charge .50 for using a card while Arco charges .35 cents. If it bugs you pay with cash that simple.

Yep, it's time for people that won't carry cash to start paying more. Times are tough and those that choose to use a middleman (bank) to manage their daily spending should be the ones to pay that middleman.

I work in the petroleum industry and have done so for almost 13 years. From my experience mostly in AZ the best places to get your fuel are large corporate chains.

Everyone gets their fuel from the same tank farm, some may add some additives but it's very minor. The biggest thing to ensure the quality of your gas is the handling of the fuel and the upkeep of the station. Most mom and pop stations are in poor repair and they do as little as possible to keep things up to snuff.

Larger chains in AZ such as Valero, QT and Kroger keep all their fuel monitoring equipment operational at all times. Keep the pumps in great repair and do all the necessary maintenance to the fuel dispensers. Like changing the filters and calibrating the pumps a couple times a year.

I've been to privately owned stations who have filters that are dated 10 years old on their pumps. Depending on the volume of your site you should be changing your filters every 90-180 days tops. FYI for any guys living in AZ all Shell and Chevron stations are privately owned thus not maintained like and of the bigger corporate sites.

Just take a look around at the station when you're there. Look at the pumps and see if their in decent shape, also look inside the store and see how well it's kept up. Those will give you and idea of how well things are maintained at the site.

it's all pretty much the same as it shares the same pipeline network. the only difference in any gas is the very, very, very tiny amounts of additives put in, most of which is a scam. my favorite is Shell boasting of the nitrogen they add. about 70% of the air mixing with the gas in your combustion chamber is already nitrogen.

"Since 1994 the government has required that detergents be added to all gasoline to help prevent fuel injectors from clogging. State and local regulators keep a close watch to make sure those standards are met; a 2005 study indicated that Florida inspectors checked 45,000 samples to ensure the state s gas supply was up to snuff, and 99 percent of the time it was. There s little difference between brand-name gas and any other, says AAA spokesperson Geoff Sundstrom. What s more, your local Chevron station may sell gas refined by Shell or Exxon Mobil. Suppliers share pipelines, so they all use the same fuel. And the difference between the most expensive brand-name gas and the lowliest gallon of no-brand fuel? Often just a quart of detergent added to an 8,000-gallon tanker truck."